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Surface modification inorganic nanoparticle modified polyurethane rigid foam and preparation

A technology of inorganic nanoparticles and surface modification, which is applied in the field of surface modified inorganic nanoparticles modified polyurethane rigid foam and its preparation, can solve problems such as low composite performance, influence of nanoparticle dispersion, poor compatibility, etc., and achieve improved bonding, Improve physical and chemical properties, solve the effect of mechanical strength and dimensional stability

Inactive Publication Date: 2010-09-15
黎卓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the agglomeration of nanoparticles affects their dispersion in polymer materials, and it is difficult to disperse uniformly in polymer systems only by physical mixing.
Moreover, the surface energy of untreated inorganic nanoparticles and polyurethane materials usually differ greatly, the compatibility between the two is poor, and the composite performance is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Modified Nano Mg(OH) 2 Preparation of:

[0043] Nano Mg(OH) 2 Add it into anhydrous n-heptane solution at a mass ratio of 1:20, and use ultrasonic treatment for 20 minutes under mechanical stirring; then press nanometer Mg(OH) 2 Add octadecyltrichlorosilane to 0.5‰ of the mass, react under mechanical stirring for 60 minutes, distill under reduced pressure, and remove the solvent to obtain octadecyltrichlorosilane self-assembled nano Mg(OH) 2 ;

[0044] Nano-Mg(OH) self-assembled with octadecyltrichlorosilane 2 Add in the mixed solution of toluene and absolute ethanol according to the mass ratio of 1:40, then press nanometer Mg(OH) 2 Add γ-aminopropyltriethoxysilane to 0.3% of the mass, react under mechanical stirring for 60 minutes, distill under reduced pressure, remove the solvent, and then dry in vacuum at 60°C for 24 hours to obtain the final modified nano-Mg (OH) 2 . Wherein the mass ratio of toluene to absolute ethanol is 6:1.

[0045] Modified Nano Al 2 ...

Embodiment 2

[0066] Modified Nano Mg(OH) 2 Preparation of:

[0067] Nano Mg(OH) 2 Add it into the anhydrous n-heptane solution at a mass ratio of 1:40, and use ultrasonic treatment for 20 minutes under mechanical stirring; then press nanometer Mg(OH) 2 Add octadecyltrichlorosilane to 5‰ of the mass, react under mechanical stirring for 60 minutes, distill under reduced pressure, and remove the solvent to obtain octadecyltrichlorosilane self-assembled nano Mg(OH) 2 .

[0068] Nano-Mg(OH) self-assembled with octadecyltrichlorosilane 2 Add in the mixed solution of toluene and absolute ethanol according to the mass ratio of 1:60, then press nanometer Mg(OH) 2 Add γ-aminopropyltriethoxysilane to 3% of the mass, react under mechanical stirring for 60 minutes, distill under reduced pressure, remove the solvent, and then vacuum dry at 60°C for 24 hours to obtain the final modified nano-Mg (OH) 2 . Wherein the mass ratio of toluene to absolute ethanol is 3:1.

[0069] Modified Nano Al 2 o ...

Embodiment 3

[0083] Modified Nano Mg(OH) 2 Preparation of:

[0084] Nano Mg(OH) 2 Add it into anhydrous n-heptane solution at a mass ratio of 1:30, and use ultrasonic treatment for 20 minutes under mechanical stirring; then press nanometer Mg(OH) 2 Add octadecyltrichlorosilane to 3‰ of the mass, react under mechanical stirring for 60 minutes, distill under reduced pressure, and remove the solvent to obtain octadecyltrichlorosilane self-assembled nano Mg(OH) 2 .

[0085] Nano-Mg(OH) self-assembled with octadecyltrichlorosilane 2 Add in the mixed solution of toluene and absolute ethanol according to the mass ratio of 1:50, then press nanometer Mg(OH) 2 Add γ-aminopropyltriethoxysilane to 1% of the mass, react under mechanical stirring for 60 minutes, distill under reduced pressure, remove the solvent, and then dry in vacuum at 60°C for 24 hours to obtain the final modified nano-Mg (OH) 2 . Wherein the mass ratio of toluene to absolute ethanol is 3:1.

[0086] Modified Nano Al 2 o 3 P...

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Abstract

The invention discloses a surface-modified inorganic nanoparticle modified polyurethane hard foam and a preparation method. The polyurethane hard foam not only has good flame retardant property, but also has good compressive strength and dimension stability. The surface-modified inorganic nanoparticle modified halogen-free flame retardant polyurethane hard foam is prepared by the following raw materials in portion by weight: 100 portions of polylol, 100 to 150 portions of isocyanate, 0.05 to 0.5 portion of catalyst, 1 to 5 portions of foam homogenizing agent, 0.05 to 0.5 portion of foaming agent, 10 to 30 portions of flame retardant, and 3 to 9 portions of modified nanoparticles.

Description

technical field [0001] The invention relates to a rigid polyurethane foam and a preparation method thereof, more specifically to a rigid polyurethane foam modified by surface-modified inorganic nanoparticles and a preparation method thereof. Background technique [0002] Polyurethane foam is one of the most widely used and most produced foam plastics. It has been widely used in pads for daily necessities, thermal insulation materials, and industrial materials such as sound absorption, sound insulation, filtration, and thermal insulation. [0003] An important factor in determining the usefulness of a polymeric foam is the degree of flame retardancy of the foam. Materials such as unmodified polyurethane foam are flammable and emit toxic fumes. Accordingly, it would be desirable to have polyurethane foams that, when ignited, resist burning, and / or emit lower amounts of toxic and / or environmentally unsuitable fumes. [0004] The traditional method of flame retardant modificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K9/06C08K3/22C08K5/521C08K5/52C08J9/12C08G18/48C08G18/71C08G101/00
Inventor 黎卓罗振扬史以俊何明顾晓利
Owner 黎卓
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